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| author |   Carles Pey <carles.pey@gmail.com> | 2021-09-18 19:30:43 +0400 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-10-10 22:19:19 -0400 |
| commit | 43c9dd8ddf4efdce126e0a0b176d729c72445b0f (patch) | |
| tree | 045ccf19160c1a97bfcf61e722e4a6f19c925210 /kernel/trace/trace_selftest.c | |
| parent | bootconfig: Cleanup dummy headers in tools/bootconfig (diff) | |
| download | linux-dev-43c9dd8ddf4efdce126e0a0b176d729c72445b0f.tar.xz linux-dev-43c9dd8ddf4efdce126e0a0b176d729c72445b0f.zip | |
ftrace: Add unit test for removing trace function
A self test is provided for the trace function removal functionality.
Link: https://lkml.kernel.org/r/20210918153043.318016-2-carles.pey@gmail.com
Signed-off-by: Carles Pey <carles.pey@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_selftest.c')
| -rw-r--r-- | kernel/trace/trace_selftest.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index adf7ef194005..875b4f1a0476 100644 --- a/kernel/trace/trace_selftest.c +++ b/kernel/trace/trace_selftest.c @@ -287,6 +287,40 @@ static int trace_selftest_ops(struct trace_array *tr, int cnt) if (trace_selftest_test_probe3_cnt != 4) goto out_free; + /* Remove trace function from probe 3 */ + func1_name = "!" __stringify(DYN_FTRACE_TEST_NAME); + len1 = strlen(func1_name); + + ftrace_set_filter(&test_probe3, func1_name, len1, 0); + + DYN_FTRACE_TEST_NAME(); + + print_counts(); + + if (trace_selftest_test_probe1_cnt != 3) + goto out_free; + if (trace_selftest_test_probe2_cnt != 2) + goto out_free; + if (trace_selftest_test_probe3_cnt != 4) + goto out_free; + if (cnt > 1) { + if (trace_selftest_test_global_cnt == 0) + goto out_free; + } + if (trace_selftest_test_dyn_cnt == 0) + goto out_free; + + DYN_FTRACE_TEST_NAME2(); + + print_counts(); + + if (trace_selftest_test_probe1_cnt != 3) + goto out_free; + if (trace_selftest_test_probe2_cnt != 3) + goto out_free; + if (trace_selftest_test_probe3_cnt != 5) + goto out_free; + ret = 0; out_free: unregister_ftrace_function(dyn_ops); |